Reenforcing end for fiber cores



May 20 1924.

H. PARKER REENFORCING END FOR FIBER CORES Filed Aug. 16 1923 2 Sheets-Sheet. l

May 20, 192.4. 1,494,440

H. PARKER REENFOHCING END FOR FIBER CORES Filed g- 16. 1923 2 Sheets-Sheet 2 PATENT OFFC" nowaan PARKER, or BERLIN, NEW HAMPSHIRE, ASSIGNOR To met COMPANY, or

BERLIN, NEW HAMPSHIRE,

A CORPORATION OF MAINE.

nnnnroncrne nun ron FIBER cones.

Application filed August 16, 1928. Serial No.- 657,804.

To all whom it may concern.

Be it known that I, HOWARD PARKER, a citizen of the United States, residing at- Berlin, in the county of Coos and State of New "Hampshire, have invented new and useful Improvements in Reenforcing Ends for Fiber Cores, of which the following is a specification. I

This invention relates to tubular cores on 1 which paper may be wound in a roll, and

more particularly to those cores, the body of which consists of a fibrous tube produced by winding paper or wet paper pulp upon a. mandrel.

The object of the invention is to providea metal end or reenforcing member for such v cores to impart strength thereto at the points of greatest strain or stress.

Referring t6 the drawing,

Figure 1 represents a longitudinal section I through one end of a core embodying-the present invention. Figure 2 represents an end member i process of construction, the inner sleeve being omitted.

Figure 3 represents another form of end member, of which the inner sleeve is omitted.

Figure 4 represents still another form of member embodying the invention.

Figure 5 represents the outer sleeve which is employed in the'finished form of the end members shown in Figures 2, 3 and t.

Figure 6 shows another embodiment of the invention in which the bridge member is clamped by the split ring members against, an internal head formed in one or the other (or both) of the sleeve members.

Figure 7 represents a section through the same after the split ringsv and metal sleeves are assembled andbefore the welding and finishing operations are performed.

Figure 8 illustrates another form of split ring which may be used.

The reenforcing end member ofthe tube is necessarily provided with a driving notch or seat to receive the pin or key of the driving element by which the core-is driven, and

it is important that this seatshould be sorotative or angular dislocation one relatively to the other.

In addition to providing a core having these desirable or necessary characteristics, it is the especial object of my invention to provide an end member which is relatively light, inexpensive and ofgreat strength and 60 durability.

Referring to the drawing, 10 indicates a fiber core, of which only a portion is shown,

but it will be understood that this is of any desired length-and diameter and that it is provided with an end member at each extremity. In general, the end member consists of three elements, namely a'n-outer sleeve, an

inner sleeve, and an intervening annular metallic member which may be formed in several parts. innersleeve 12 are each formed of a flat blank of relatively thin sheet metal, e. g

sheet iron or sheet steel, bent into cylindrical form with its longitudinal edges overlapped. It is desirable that the outer surface of sleeve 11 and the inner surface of sleeve 12 should be unbroken cylindrically, and consequently one edge 13 of sleeve 11 is inset,

whereas the corresponding edge14 of sleeve 12 is outset, in each case, the thickness of the overlapping other edge of the sleeve.

' The overlapping edges of each of the two The outer sleeve 11 and the sleeves-are electrically automatically welded,

either by spot welding or line welding as .may be desired. The diameters of the two sleeves are such that they will receive, with a driving or friction fit, the end of the fiber core, and

the .core is internally and externally grooved to receive the inset or outset overlapping edges of the sleeves. To assist in placing the end members, when completed, on the core, the inner end (as it might be termed) outer sleeve, to assist in preventing the dislocation of the core end.

Between the outer ends of the two sleeves, I place the intermediate annular member which comprises one ormore split rings which are of a tliic little less than that of the fiber core, and which receive the thrust of the driving key or pin. Each ring is substantially circular, but its ends age se arated a distance Sufiess approximately a cient to form a dri seat or notch ofthe desired width. In Figures 2, 3 and 4, I have shown the end members as being respectively provided with one, two or three of such rings. 7

In Figure 2, a split ring is indicated at 17, and its end faces 18, 18, form the side walls of the seat or notch 19. In this case, I complete the seat by a bridge member 20, having parallel arms 21, the inner faces 22 of which are flush with the faces 18, the cross bar 23 and an extension 24. In Figure 3 there are two rings 25, 26, and a bridge member 27, of the same general form as that at but with shorter arms. In F igure 4 there are three rings 28, 29, 30, the end faces of which form the sides of the seat or recess 19, and a bridge member 31 which is in effect the same as the cross bar of the member 23 in Figure 2. These various members are all autogenously welded together and arethen assembled with the outer and inner sleeves so that the outer ends of the sleeves are flush with the exposed outer face of the ring member. The inner sleeve is formed with a notch 31 registering with the notch or seat formed by the ring or rings and the bridge member. The rings are grooved as at 32, 32 to receive the overlying lapped edge 14 of the inner sleeve.

The end of the fiber core is notched to receive the bridge member, and it is driven or crowded-into the metal end until it bears against the intervening member thereof as shown in Figural. Then, by suitable tool or appliance, the rear end of each sleeve is more or less forced into or embedded in the fiber core, as indicated at 33, 34, so that the wall of the core is clamped between the sleeves and the metal end member as a whole and is securely,, locked in lace. The bridge members may be drop orged or may be stamped from heavy sheet metal, and the rings may be formed from drawn bars of appropriate shape in cross section.

When the metal end is formed of its several elements, it is to all intents and purposes an integral or unitary structure, in view of the electric welding together of the several elements. It is not necessary, where several rings are employed, to weld them directly one to the other, since their being welded to the sleeves is sufiicient to connect them one to the other.

The sheet metal sleeves are very thin, so that, when the end of the 'core is inserted, it is compressed sufiiciently so that the cylindrical surface of the body of the core is flush with or has substantially the same external diameter of theouter'sleeve. Thus ordinarily itis unnecessary to reduce the diameter of the ends of the core by a cutting or abrading operation. It is evident that, if desired, the outer sleeve may be notched to register with the seat in the intermediate member and the notch in the inner sleeve,

as shown in Figure 2. Also, if desired, in-

dentations may be made in the outer sleeve as at 35, to force a protuberance into the body of the fiber core to assist in securing the metal end on the core.

The end member, as-thus disclosed,com prising the inner and outer sheet-metal sleeves and the intermediate member, which is so formed as to provide a notch or seat for the core-driving pin or key,-forms an annular socket into which the end of the core maybe inserted or driven. Said intermediate member, in this aspect of the case, consists of one or more split rings with the ends spaced apart, and a bridge member which if welded to the ring or rings bridges and forms the end Wall of the recess or key seat, and prevents the rings from being expanded or contracted when the core is being driven. Said intermediate member thus considered as a whole is annular and is formed or provided with the notch or key the spirit and scope of the invention if each sleeve were formed from thin drawn seamless metal tubes which for this purpose may be regarded as thin sheet metal in contradistinction to cast metal. I

In Figs. 6 and 7 I have shown a metal end or reenforcing end, in which the inner and outer sleeves are formed of seamless drawn metal, although for purposes of economy-and convenience it is preferable to form them of flat sheet metal blanks bent into cylindrical form as hereinbefore described. I have also shown that the bridge of the intermediate member may be in the form of a split ring, so that the parts which form said intermediate member may all be alike, and thereby simplify the manufacturing operations. In this instance I may employ threerings 36, 37 38, although the two rings 36 and 37 could be made in one piece if desirable. But as illustrated, how ever, they are all the same size but with the ring 38 so arranged as to bridge the end of the notch 19 formed by the spaced ends of the rings 36, 37. gThe spaced ends of ring 38 may be approximately diametrically opposite the notch 19. Either or both of the sleeves is formed with means cooperating with the rings 36, 37, for clamping the ring 38 between them. Such means may consist of abutments, such for example as beads 40, 41, formed in the sleeves 11', 12',-interna1ly on the former and externally on the latter. Of course either bead or abutment could be omitted, and in practice I omi-t it from the sleeve 11. In assembling the parts, the three rings are slipped on the inner sleeve 12, so that the notch provided by the spaced end faces of the rings 36, 37- registers with the recess (such as that at 31 in Fig. 5) and with the body of' the ring 38 bridging? the notch. The parts thus far assembled are telescoped into sleeve 11, and by a power press or other suitable instrumentality are forced thereinto until the ring 38 bears firmly against the bead 10. This operation has the efi'ect of peening the edges of the sleeves, whereby :the' parts are all firmly clamped together. By an electric welding machine the rings 36 and 37 (and 38, if desired) are Welded to the two,sleeves. Only the ends of the rings 36, 37 need be welded to the sleeves. In any event, the bridge ring 38 is firmly clamped against the bead or beads of the sleeves but of course it, too, may be welded in place as desired. Then by a grinding machine or other instrumentality the peened ends of the sleeves are removed, leaving the exposed face of ringv 36 and the ends of the sleeves flush. In this construction, when the inner sleeve is formed with a bead or other e uivalentv stop or abutment, it serves accurate yto locate the intermediate member in reference to the finished ends of the sleeves. When the reenforcing end is completed, it is placed on the extremity of the core and there secured as herein previously described.

The bridge member need not be formed separately from the split ring. In fact, a single split ring 43, such as shown in Fig. 8, may be employed, so cut from a bar that when bent into circular form its opposing end faces .44, 45, form the notch,'or seat, which is bridged by the projection 46 on one of its ends. T hlsming may be secured in place between the sleeves and its overlapping end portions welded to said. sleeves. 1

The generic invention or improvements hereinbefore set forth have previously been described a in my application Serial No. 618,852, filed February 13, 1923, of which the present application is in part a continuation.

"What I claim is 1. A reenforcing end for fiber cores, com

prising an inner sleeve and a separately formed outer sleeve of thin sheet metal, and a separately formed intermediate metallic member located within and between the outer ends of the sleeves and secured there-' to, the intermediate member bein formed to provide a notch or seat, and said sleeves and intermediate member forming an annular socket to receive the end of the core.

2. A reenforcin end for fiber cores, comprising an inner s eeve and an outer sleeve of thin sheet metal, and an intermediate metallic member located within and between the outer ends of the sleeves and secured thereto, said intermediate member comprising a split ring having spaced ends to constiprising an inner sleeve and an outer sleeve of thin sheet metal, each sleeve having longitudinal lapped welded edges and an annular metallic member located between the outer ends of said sleeves and secured thereto, forming with said sleeves an annular socket to receive the core end, the said annular member being formed with a driving notch or seat and said inner sleeve being at least twice the length of the outer sleeve.

5. A reenforcing end for fiber cores, comprising an inner sleeve and an outer sleeve of thm sheet metal bent into cylindrical form with longitudinal edges so overlapped that the inner sleeve has an unbroken inner cylindrical surface and the outer sleeve an unbroken outer cylindrical surface, and a separately formed intermediate notched metal annular member located within and secured to the outer ends of said sleeves, to form with said sleeves an annular socket to receive the end of the core.

6. A reenforcing end for fiber cores, comprising an inner sleeve and an outer sleeve of thin sheet metal, and an intermediate metallic member located within and between the outer ends of the sleeves and secured thereto, the intermediate member bein formed to .providea notch or seat, and sai annular socket to receive theend of the core,

.the inner ends of said sleeves being imvpressed or embedded into the core. 7

7. A. reenforcing end for fiber cores, comprising an inner sleeve and an outer sleeve of'thin sheet metal, and an intermediate metallic member located within and between the outer ends of the sleeves and secured thereto, and an annular intermediate member'located within and secured to the outer ends of said sleeves, said intermediate member comprising a plurality of split rings with their ends spaced to form a key seat or notch, and a bridge member bridging the outer sleeve, and a separate y formed intermediate member secured thereto, said member comprising a split ring whose spaced end faces form a notch or keyseat, and a bridge member bridging the end of said keyseat or notch.

9. A reenforcing end for fiber cores comprising an inner sleeve, a separately formed outer sleeve, and a separately formed intermediate member secured thereto, said member comprising one or more split rings-having spaced end faces, forming a keyseat or notch, and a split ring arranged with its body portion bridging the end of said notch.

10. A reenforcing end for fiber cores comprising an inner sleeve, a separately formed outer sleeve, and a separately formed inter-v mediate member secured thereto, said member comprising a split ring whose spaced end faces form' a notch or keyseat, and a a bridge member bridging the end of said ke'yseat or notch, the end portions of said sp it ring being welded to said sleeves.

11. A reenforcing end for fiber cores comprising an inner sleeve, a separately formed outer sleeve, and a separately formed intermediate member secured thereto, said member comprising a split ring whose spaced end faces form a notch or keyseat, and a bridge member bridgin the end of said keyseat or notch, one 0 said sleeves being formed with an abutment engaged by said bridge member.

12. A reenforcing end for fiber cores comprising an inner sleeve, a separately formed outer sleeve, and a separately formed intermediate member secured thereto, said member comprising a split ring whose spaced end faces form a notch or keyseat, a bridge member bridging the end of said keyseat or notch, and a bead formed on the inner sleeve against which said bridge member is clamped by said splitering. In testimony whereof have aflixed 'my signature.

HOWARD PARKER. 

